org.jboss.ha.framework.interfaces
Class FirstAvailableIdenticalAllProxies

java.lang.Object
  org.jboss.ha.framework.interfaces.FirstAvailableIdenticalAllProxies

All Implemented Interfaces:

Serializable, LoadBalancePolicy

public class FirstAvailableIdenticalAllProxies
extends Object
implements LoadBalancePolicy

LoadBalancingPolicy implementation that always favor the first available target i.e. no load balancing occurs. Nevertheless, the first target is randomly selected. This does not mean that fail-over will not occur if the first member in the list dies. In this case, fail-over will occur, and a new target will become the first member and invocation will continously be invoked on the same new target until its death. Each proxy using this policy will *not* elect its own prefered target: the target *is* shared with all proxies that belong to the same family (for a different behaviour please take a look at FirstAvailable)

Version:

$Revision: 1.3.6.1 $

Author:

Sacha Labourey.

See Also:

LoadBalancePolicy, Serialized Form

Constructor Summary

FirstAvailableIdenticalAllProxies()

Method Summary

Object	chooseTarget(FamilyClusterInfo clusterFamily) Called when the stub wishes to know on which node the next invocation must be performed.
Object	chooseTarget(FamilyClusterInfo clusterFamily, org.jboss.invocation.Invocation routingDecision) Called when the stub wishes to know on which node the next invocation must be performed.
void	init(HARMIClient father) Initialize the policy with a reference to its parent stub.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FirstAvailableIdenticalAllProxies

public FirstAvailableIdenticalAllProxies()

Method Detail

init

public void init(HARMIClient father)

Description copied from interface: LoadBalancePolicy

Initialize the policy with a reference to its parent stub. the load-balancing policy implementation can use HARMIClient data to take its decision

Specified by:

init in interface LoadBalancePolicy

Parameters:

father - The stub that owns the policy

chooseTarget

public Object chooseTarget(FamilyClusterInfo clusterFamily)

Description copied from interface: LoadBalancePolicy

Called when the stub wishes to know on which node the next invocation must be performed.

Specified by:

chooseTarget in interface LoadBalancePolicy

Parameters:

clusterFamily - A list of potential target nodes

Returns:

The selected target for the next invocation

chooseTarget

public Object chooseTarget(FamilyClusterInfo clusterFamily,
                           org.jboss.invocation.Invocation routingDecision)

Description copied from interface: LoadBalancePolicy

Called when the stub wishes to know on which node the next invocation must be performed.

Specified by:

chooseTarget in interface LoadBalancePolicy

Parameters:

clusterFamily - A list of potential target nodes

routingDecision - The actual invocation object if the policy wants to have some kind of invocation-based routing strategy

Returns:

The selected target for the next invocation